Improvement in hay-elevators



UNITED STATEs PATENT GEErcE.

' CHARLES E. GLADDING, OF TOWAN'DA, PENNSYLVANIA.

IMPROVEMENT lN HAV-ELEVATORS.

Specification forming part of Letters Patent No. 116,300, dated June 27, 1871.

. in the art to make and use the same, reference being had to the accompanying drawing forming part of this specification.

My invention consists in ini-proving hay-elevators, as hereinafter fully described and subsequently pointedV out in the claims.

Figure l is a sectional elevation of my iinproved apparatus. Fig. 2 is a sectional elevation of the traveler, and Fig. 3 is a section ou the line X' X.

Similar' letters of reference indicate corresponding parts.

A is the beam for the traveler, suspended at each end, in any'suitable way, from any support,

and between the cords, and especially where itl may be weakened by splicing, as at B. It is suspended by a thin plate or bar, G, arranged with the plane of its longest diameter in the long itudinal axis of the beam. D is the traveler, consistin g of two parallel bars rigidly connected together by bolting t0 a block, G, with a pulley, E,

between them, at the lower end, for the hoisting-rope F to work over, and at the upper end having a thin roller, H, on a strong stud, I, on each ofthe said bars 5 saidv rollers face each other across a slight intervening space between them, which is provided for, to allow the traveler to pass the suspension bar C. The weight K represents the load to be hoisted and conveyed over the mow or stack. L is aball, knot, or other enlargement on the rope a short distance above the weight, or the fork or hooks which take the load; and M is a pair of hooks for catching under the ball to hold the load up while the traveler moves to the place of discharging. These hooks are pivoted to the lower end of the traveler, preferably in the axis of the pulley E, and they areL connected at the axis to the yoke N, between the bars of which the hoisting-rope works, and

the yoke swings up and down over the segmental tongue O of the block G, being raised up by the hoisting-rope and ball L. As the free end o f the yoke passes up over the tongue O it passes under a pawl, P, between two arms, U, pivoted to the traveler at V, and provided with a trippingarm, W. The said pawl Pis pivoted to the outer or free ends of the arms U, and is raised off the tongue O, as the said arms U are also, by the free end of yokeN when it rises; and it drops behind it and prevents it `from falling back, thereby securing the ,load from falling back while it is being drawn along the beam A by the hoisting-rope. The traveler is suspended from the Vbeam at the cavity X when hoisting, in which cavity the rollers H rest; and as soon as the load iselevated and secured and the rope is prevented from running overthe pulley E by the ball coming in contact with the yoke, the force of the hoisting-rope becomes so great on the traveler as to draw it out of the cavity up the inclines Y and along the beam as far as required fordischarging the load, which is done by tripping the forks holding it. Then, the hoisting-rope being let free, the traveler runs back down the beam, inclined for the purpose, to the cavity X; here it is arrested by the block Z, and the trippingarm XV comes against the block A, a little before the traveler stops and lifts the arms U and the pawl I), letting the yoke N and hooks M fall and release the ball L and the fork-or hooks, which then run down to the hay to be elevated,

for taking another load. The block A is camshaped, and mounted on a pivotfor being shifted to arrest the trip-lever sooner or later, and the block Z is mounted on the beam A adjustably, so as to be adjusted for stopping the traveler, as may be required. The incline Y in the beam A is made abrupt, for imparting sufficient speed to the traveler to insure the striking of the triplever against the block A forcibly enough to trip the yoke N in all cases. When the pawl l? drops behind the yoke N it falls upon the curved surface-of the segment and locks the yoke N. Itswings downward to yrelease the yoke when the arms U are raised.

Having thus` described my invention, I claim as new and desire to secure by Letters Patentl. The inclined beam A of a hay-elevator, having the steep declivity Y, stop Z, and block A relatively placed, as and for the purpose specified.

2. In combination with a traveler,rope, hooks, and knot, the yoke N, tongue O, and pawl P, arranged as and for the purpose specified.

CHARLES E. GLADDING. Witnesses:

H. PEET, PAUL D. MoREow. 

